Question

Efectuati:
a) (-2) * (-5)
b) (-7) * (+3)
c) 18 * (-1)
d) 9 * (+3)

Answer 1

$(-2) * (-5) = +10$

$(-7) * (+3) = -21$

$18 * (-1) = -18$

$9 * (+3) = +27$

$-11 * (+4) = -44$

Answer 2

a)(-2)·(-5) =+10
b)(-7)·(x+3)=-21
c)18·(-1)=-18
d)9·(x+3)=+27
e)-11·(x+4)=-44